Brake



J. RIISE BRAKE Jan. 15, 1929. l 1,699,208

Filed Sept. 2l, 1925 Patented Jan. 15, l1929.

UNITED STATES JOHN RIISE, 0F DGYLESTOWN, OHIO.

BRAKE.

Application led September 21, 1925. Serial No. 57,617.

The present invention relates to brakes.

More pairticularly the present invention relates to brakes for motorvehicles and has for one of its objects the provision of pow erfulbraking means suitable for use on trucks, motor buses and other heavyvehicles.

A further object to provide a brake which will cooperate with thedifferential gearing in therear axle of a motor vehicle and which ma ybe assembled upon said motor vehicle or removed therefrom with a minimumof trouble.

A further object is to provide a brake structure which will cooperatewith the differential mechanism of a motor vehicle, which will notreduce the road clearance and which will form a pocket for lubricant.

Further objects will appear as the description proceeds.

Referring to the drawings- Figure 1 is a view taken along thelongitudinal center line of a motor vehicle, il` lustrating aportion ofthe propellingr mechanism ofsaid vehicle, including part of thedifferential gearing and a. portion of the braking mechanism forming thesubject inatter of the present invention, said sect-ion being takenalong the plane indicated by the arrows lwl of Figure 2;

Figure :2 is a view in rear elevation of the structure shown in Figure1, said view being taken in the direction of the arrows 2-2 of Figure 1;and

Figure 3 is a fragmentary view of a modilication of a portion of thebraking mechauism.

The numeral l indicates the rear axle housing of a motor vehicle, whichhousing contains the drive shafts 2-2, which are connected to the reardriving wheels of the motor vehicle. Secured' in front of the axlehousing l and providing communication therewith is the housingcontaining the drive shaft 4, which drive shaft t derives its power fromthe propeller shaft of the motor vehicle. Said drive shaft 4 is providedwith the bevel pinion 5, which meshes with the bevel gear 6, which bevelgear 6 drives the shafts 2-2 through any preferred type of differentialgearing. Secured to the axle housing 1 in rear thereof and providingcommunication therewith is the housing 7, which contains the brake shaft8. Said brake shaft S is provided with the bevel pinion 9 meshing withthe bevel gear 6. The means providing bearings for the shafts 4 and 8need not be described herein, inasmuclras bearings suitable for thepurpose are Well known to those skilled in the art. Preferably saidshafts L and 8 should have their axes in the saine vertical plane, butnot in alignment. rFhe angularity between the axes of the shafts 4 and 8is shown rather exaggerated in Figure 1, said angularity being definedby the angle between the axes A--B and irl-0, the axis A-B of the shaftthe periphery of the bra-ke drum 9; Said i slices 10-10 are pivotallyconnected to theI frame of the housingl about the axes 124-12. Saidbrake shoes 10-10 may be controlled by any preferred operating means,certain operating means 10*L being indicated. Inasmuch-assaid operatingmeans do not constitutey the present invention, no description thereofis considered to be necessary. `Set screws 10"-10b may be provided forlimiting outward movement of the brake shoes l0;

The brake drum 9 is secured to the shaft 8 by novel means, which willnow hedescribed. The shaft 8 is provided near its rear extremity withthe conical* bearing portion 13 which seats wit-hin a correspondingconical aperture in the brake drum 9. The ext-remity of the shaft 8 isscrew-tlneaded, as indicated by the numeral 14, and a nut 15 is providedfor engagement with said screwthreaded portion 141-. Said nut 15 has itsrear extremity of non-round conformation, as indicated by the numeral1G, said nonround port-ion preferably projecting beyond the rearextremity of the brake drum 9,

whereby to simplify the matter of operating said nut 15. Said nut isprovided at its forward extremity with the outwardly extending Hange 1T,the outer face of which iiange 17 is adapted to be engaged by theinwardly extending fiange 18 of the collar 19. Said collar 19 `is heldin place on the brake drum 9 by means of bolts 20-20. Said flange 17should be rotatable relative to said collar 19, for a reason which willappear hereinafter. Said flange 17 will preferably have a circularconformation.

Figure 3 illustrates a detail of construction and shows how the brakeshoes 10-1O may be supported from the housing 7 in a manner to conservespace. It Will be noted from an inspection of Figure 3 that the rearextremity of the housing 7 is providedivith outstanding flanges 21,Which have enlarged portions 22 for carrying pins 23. Said pins 23 havethe axes 12-12 above referred to, and provide pivotal mountings for thebrake shoes 10-10. Springs 23a hold the brake shoes 10 resiliently inposition with respect to the enlarged portions Q2, y

By reason of the construction illustrated and described, brakingmechanism is provided Which acts directly upon the differential gearingconnected to the propeller shaft, and the present invention provides themeans for accomplishing this result, which means may be assembled ordisassembled with a. mint inuin of trouble. Moreover, by reason of theangularity in a vertical plane betiveen the driving shaftll and thebrake shaft 8, the result is obtained that braking means of generoussize may be provided Without requiring mechanism at a lower level thaninvolved in the rear axle housing with which it cooperates.

The angular relation between the shafts 4 and 8 also serves to preventthe escape of lubricant, inasmuch as said `angular relationship providesa relatively deep pocket in the bottom of the housings 1, 3 and 7,Wherein oil or other lubricant may lie at a rela tively high levelWithout tending to escape through the packing of the shafts et and 8.

The matter of convenience in taking ofi' the brake drum and putting onthe brake drum is very simple according to the present invention. Saidbrake drum is in rear of the rear axle housing and is readily accessibleto the Workman. Inasmuch as the flange 17 is capable of turning movementWithin the collar 19, when the nut 15 is backed off from thescrew-threaded portion 14 of the shaft 8, said nut Will, by reason ofthis engagement With collar 19, draw said collar along. Inasmuch as saidcollar is bolted to the brake drum 9, backing off the nut 16 Will resultin the pulling off of the brake drum 9.

Though a preferred embodiment of the present invention has beendescribed in detail, it will be clear that many modificationsl Willoccur to those skilled in the art. lt is intended to cover all suchmodifications that fall Within the scope of the appended claims.

lllhat is claimed is:

l. In a motor vehicle, in combination, a rear axle housing, differentialgearing therein, a housing connected to said rear aide housing forwardlythereof, a drive shaft for said gearing contained in said forwardlyextending housing, another housing entending in rear of said rear axlehousing, and a brake shaft container4L in said rearivardlv extendinghousing, said bralte shaft benig connected to said di'llj'erentialgearing, said shafts being arranged in the same vertical plane but inangular relationship to one another.

2. ln a motor vehicle, in combination, a rear axle housingdiliqierential gearing therein, shaft for driving said gearing, and abrake shaft driven by said gearing and e1;- tending rearwardly of saidhousingA` said brake shaft being pro'ifided with a brake drum, a nut onsaid brake shaft adapted to hold said drum in place on said brake shaft,abutment means secured to said drum, said abutmentmeans and said nutbeing rotatable relative to one another, said abutment means havingportion for engagement with said out when said nut is baclred olf. fromsaid brake shaft.

3. ln a motor vehicle, in combination, a rear axle housing, a housingmounted in front of said rear axle housing, another lionsing connectedin rear of said rear axle hous ing, and shafts carried by said secondand third mentioned housings, which shafts have their aries located inthe same vertical plane but out of alignment ivith each other. Y

li. ln a motor vehicle, in cinubiuation, a rear axle housing, a housingconnected thereto in front thereof, another housing connected thereto inrear thereof, shafts carried by said second and third mentionedhousings, beveled pinions upon said shafts, said shails having theiraxes in the same vertical `glane but having the arc above said axes ofless magnitude than the arc below said axes-1 and braking mechanismcarried by the shaft Within said rearwardly extending housing.

Signed at Doylestown, (lhio, this 17th day of September` 1925.

